Dost-gollegtor



(N-o Model.) 2 SheetsfSheet 1.

J. W. WILSON.

DUST GOLLEGTQR.

(No Model.)

2 SheetswSheet 2.

J. W. WILS ON.

DUST' COLLECTOR.

Patented Deo. 7, 1897.

. hw,... Mme! l U'Niirle STATES,

PATENT OFFICE.;

JOSEPH w. WILSON, or sALT LAKE orrv, UTAH.'

nner-COLLECTOR. Y

I SPECIFICATION frmingpare If-'Letters raient No. 595,256, datedDecember 7, 1897.

` unlication filed September 12, 1896. Serial No. 605,660. (No model.) s

' To all whom it may concern,.-

, Beit known that I, JOSEPH W.,W1LsoN, a

citizen of the United States, residing lat Salt.

Lake City, in the county of Saltl Lake and State of Utah, have inventeda certain new and useful Improvement in Dust-Collectors, siwh'ich thefollowing is a full, clear, and ex- -act description, reference beinghad to the aocompanying drawings, forming a part of this xospecification. s

The object of my invention is to provide an improved vibrating orshaking 'screen -box adapted to be used in dust-collectors.

l My present invention is an improvement on m5 fthe device described in-my Letters-Patent No.

568,968, dated October, 1896.

Referring to the drawings, Figure I illushates a vertical transversesection of the dustl qollector, taken along the line I I vof Fig. Il,"2o 'showing my improved screen-boxes placed therein. Fig. Il isa vertical longitudinal sec- `tion taken along the linel Il Il of Figi, a partof one -end beinginelevation. Figlll isa detail end view of theset-screw and shaft to z5 which the screen-cloth is fastened. Fig. 1V is-a similar view of the opposite'end. Fig. Y is a vertical sectiontake-ri along the line Y V- of Fig, lll; Fig. Vl is a.eerrespondingvertieal` section 'taken along the vline Vl VI of Fig. IV.

I is the opening through which the dust- `laden air enters, and 21s the.chamber into which the said air is introduced. 2' are V- shapeddefieotors placed in this chamber to weaken the force of theair-current.

3 are openings in the bottom of the cham-` ,"4is a' sliding valveadapted to close and open the openings. .5 are a series of screensplaced within the chambers formed by the walls of vibrating or shakingupper and lower screen-boxes 6 6'.

' 7 are passages on each side or" the device leading from the bottom ofthe lower screen- A, A vboxes 6 6' to the top of the casing, as shown,4'5 andthen downwardly. 7' 8 are corrugated or luted screens placedwithin the passages '7.

9 and 9' are eccentrics carried on suitable shafting, having attachedthereto an arm 5o controlling the opening and closing of the .valves 4.

10and 10' arewtappets carried on suitable shafting 1l 11', there beingone such tappet on each side of said shafting. They are adapted `as theyrevolve to alternately strike-the fingers l2, 13, 12', and 13', saidfingers being held in placeby Ineans of the springs 14, 15, 14',`

i and 15'.

It will beseen that as the tappets revolve and come in contact with thelingers the rods 16, 17, 16', and 17' are carried outward until sthefurther revolution of the tappet releases the fingers, when the saidrods 16, 17, 16', and

17' will violently returnV to place, riding in their housingsby means ofthe springs 14, 1,5, 14', and 15'. means of the shoulders 18, 19, 18',and 19. The inner ends voli the rods 16, 1'7, 16','and 1-7 kare attachedto the boxes 6 6'. Suitable motion being thus imparted to the boxes 6 6'The motion is limited by and the dust-laden air being directed intothese boxes, as described, it is necessary to place'screens therein inorder to separate the impurities from. the said air. This I accom.-plish by means of the screens 5 of cloth 'strung 'therein in the-following manner: Through the ends of the boxes 6 6' are piercedholesthrough which wires 20 are passed, as shown. 21 are slats extendinglengthwise of the bottoms of the boxes, which are V shaped, placed withthe angle upward to prevent the dust collecting thereon. attached to theinclined surfaces of these slatsand then crossed backA and forth overthe wires 20, making an irregular or zigzag surface, as shown. The otherends are attached to the shafts 22. These shafts 22 revolve injournal-boxes 23, attached to the boxes 6 6', and constitute a means forkeep .ing them tight. One end, Figs III and V, is provided with aset-screw 24. The'other end 25 projects beyond the journal and issquared. This permits the use of a wrench. Thus when the. cloth becomesslack theset-screw 24 is loosened, a wrench is inserted overthe squareend 25, the shaft 22 revolvedl until'the cloth screen 5 is tight, andthen the set-screw241is fastened and the device ready for use again. Theboxes 6 are provided withl a flexible connection 26 to the stationarypart of the collector. By this means no dust passing into the movingboxes 6 6' through the fixed open- The screens 5 are ings 3 can escape,but'all the air and the impurities carried with it is forced throughthey 'forced into the chamber 2, placed vbetween them. It passesdownward through the lower set, depositing an amount of sediment on theconveyer-brusbes 37 27. The aircurrent then passes up the passages '7into the upper chambers, being introduced into said upper chambers fromb'olow.

28 and 28' are conveyer-brushes placed at the bottom thereof to conveyaway the deposited sediment. The air finally passes through theopeningsfin the tops of the upper boxes into the revolving cylinder 29,which is kept clean bye, stationary or rotary .brush 30, placed aboveit. Theforce of the air-current is broken first by the deilectors 2 andnextby the screens in the lower boxes.

Itis further broken by the corrugated pieces 8 within the passages 7. Bythe time it reaches the upper boxes it has hardly power enough to carryany impurities, but should any re main they are removed while the air ispass-` ing into the cylinder 29.

It will be noticed that the two lower boxes are guarded by valves 4',which alternate', so'

that when one box is open the otheris closed,

forming a dead-airbox. The knocking caused bythe tappets, alreadydescribed, knocks oit any substances which may have adhered to thescreens.

3i is the exit for the/separated impurities.

'The motion for the traveling brushes and for the revolving cylinder is.obtained by means'of suitable gearing 32 33, any convenient source-.ofpower.

The advantage gained by my present invention over that described in myapplication ,referredto is in the improved construction for securing thescreens 5'. Screens used in dust-collectors is ver f apt to becomeloose, as the motion necessar to knock oit impurities is very violent.lly the construction I have described the irregular or zigzag surfacemaybe` preserved and the screen-cloth may.

be kepttight. v

I claim as my'inventionl A vibrating or shaking screen-box fordustcollectors comprising end walls provided with series/ of verticalrows of perforations, the wires supported in the said holes, theinverted- V-shaped slats formingthe b ottom of the box, the series ofjournal-boxes mounted on the end walls, the series of adjustable shaftsmounted in the journal-boxes, set-screws for securing the shafts totheir adjustment, the series of irregular'or zigzag screens secured vtothe inclnes of the slats and passed back propelled byand` forth betweenthe vertical rows of Wires,

rand secured at their upper ends to the shafts,

and the 'flexible connection whereby the screen-box is suspendedsubstantially as described. JOS. W. WlLSON.

lIn presence cfm E. J. Wmrs,l

G. BLAKETX.

